2. NFC & Windows (Phone) 8.1
Catalin Gheorghiu
I Computer Solutions

3. Content

4. NFC

5. TAP AND DO
A gesture that is a natural interaction between people in close
proximity used to trigger doing something together between the
devices they are holding.
System: Near Field Proximity (e.g., NFC)

6. NFC
NFC is opening up new possibilities for mobile applications.
Applications using this short-range radio technology can greatly
simplify how a user gathers data and interacts with their
environment. When a phone touches, or is held near an NFC tag or
another NFC capable device, the phone can exchange data with that
tag or device. This data could be a link to download the menu of a
favorite restaurant, the specifications for an electronic gizmo, paring
information from a Bluetooth headset or another phone that can be
used to exchange objects: the possibilities are endless.

7. NFC technology basics
 Standardized radio technology
 Works on short distances (typically up to 4 centimeters) in the 13.56
Mhz spectrum
 3 operating modes: Reader/Writer, Peer-2-peer and card emulation
working simultaneously

8. NFC use cases
NFC-enabled devices can gather and transmit information to and
from passive NFC tags. NFC tags come in variety of shapes, types
and sizes and can be read only or rewriteable. They consist of an
antenna and a memory chip and do not require any power. They
receive power from the NFC device that comes in close proximity
and tries to either write or read data from the tag. Tags can be
embedded into various products such as merchandise, inventory,
posters (smart posters), business cards, etc. The information stored
on NFC tags can be generic and standardized (e.g., URL, vCard,
telephone number, or Bluetooth pairing information), or it can be
application-specific (e.g., URI, raw data, or mimetype).

9. Tap to pair
Due to the short range of the interaction (e.g., tapping) NFC can be
used to establish a direct connection between two devices using a
secondary bearer technology such as Bluetooth. By using NFC
pairing to facilitate connecting two Bluetooth devices, the connection
is done by a single tap gesture, which significantly improves the user
experience. Nokia has championed this use case by implementing it
in its Bluetooth-enabled accessories.

10. Tap to pay/authenticate/redeem
In this case, the NFC mobile device emulates a standard NFC tag or a
contactless SmartCard – generally referred to as Card emulation mode. This
means the mobile device can be used as a credit/payment card, transit card,
access key, coupon, or loyalty card. Typically for this use case, the information
from the emulated card (i.e. credit card information, transit ticket, discount
voucher) needs to be stored and managed in a secure and tamper-proof way.
This is done via the Secure Element, a dedicated chip with restricted and
managed access control that is either embedded into the device or connected
externally via a SIM card or SD chip. The service provider (bank, transportation
authority, retailer, or operator) deploys and manages the card information on
the Secure Element using a broker, the Trusted Service Manager (TSM). These
types of use cases can be done without an application or using an application
or application framework (i.e. Wallet).
Tap to pay/authenticate/redeem

11. Scenarios
Tap to pay/authenticate/redeem
Other taxonomy/recap:
• Connect Devices
• Exchange Digital Objects
• Acquire Content

12. Demo

13. Code Sample

14. Resources
http://msdn.microsoft.com/en-us/library/windowsphone/develop/jj207060(v=vs.105).aspx
Proximity Tapper
http://proximitytapper.codeplex.com/

15. Questions?
Contact:
•My Blog http://ronua.ro/blog
•My Email catalin.gheorghiu@ronua.ro